Method and device in nodes used for wireless communication

ABSTRACT

The present disclosure discloses a method and a device in nodes used for wireless communications. A first node first receives a first radio signal and a second radio signal; and then determines that transmitting power of first control information in a first time window is a first power value and transmitting power of second control information in a second time window is a second power value; and transmits the first control information in the first time window with the first power value; the first power value is unrelated to the second power value, and the second power value is relevant to whether the first time window overlaps with the second time window. The present disclosure designs power allocation priorities of first control information and second control information to optimize both transmission performance and efficiency of a feedback channel in sidelink.

CROSS REFERENCE TO RELATED APPLICATIONS

This application is a continuation of International Application No.PCT/CN2020/088394, filed Apr. 30, 2020, claims the priority benefit ofChinese Patent Application No. 201910399542.3, filed on May 14, 2019,the full disclosure of which is incorporated herein by reference.

BACKGROUND Technical Field

The present disclosure relates to transmission methods and devices inwireless communication systems, and in particular to a method and deviceof power control in IoT or V2X system.

Related Art

In response to rapidly growing Vehicle-to-Everything (V2X) business,3GPP has started standards setting and research work under the frameworkof NR. Currently, 3GPP has completed planning work targeting 5G V2Xrequirements and has included these requirements into standard TS22.886,where 3GPP identifies and defines 4 major Use Case Groups, coveringcases of Vehicles Platooning, supporting Extended Sensors, AdvancedDriving and Remote Driving. At 3GPP RAN #80 Plenary Session, thetechnical Study Item (SI) of NR V2X was initiated. Later at the firstAdHoc conference of RANI 2019, it was agreed that the pathloss between atransmitter and a receiver in a V2X pair will be taken as reference whencalculating the V2X transmitting power.

In the discussions in Rel-12/13/14 over Device to Device (D2D) and V2X,the transmitting power on a sidelink is generally obtained based on apathloss between a base station and a terminal, so as to ensure thatradio signals transmitted on a sidelink won't impact uplink receiving ofthe base station. In Rel-15, when it comes to NR-based V2X,interferences of radio signals between V2X links also need to beconsidered. Further, at the RANI #96bis meeting, RANI agreed that thereis need to support transmission of Physical Sidelink Feedback Channel(PSFCH) in sidelink groupcast and unicast to improve sidelinktransmission performance, therefore, a corresponding method of powercontrol has to be re-optimized.

SUMMARY

According to the latest progress in discussions about V2X at the RANI#96bis meeting, a pathloss on the sidelink needs to be considered in thepower control on the sidelink. Besides, a groupcast PSFCH can supporttwo modes of merely feeding back Non-Acknowledgement and feeding backHybrid Automatic Repeat request Acknowledgement (HARQ-ACK); while aunicast one only supports feeding back HARQ-ACK. In view of the abovemodes of feedback, when a terminal device is in groupcast-based V2Xcommunications and unicast-based V2X communications at the same time,how to determine groupcast and the unicast transmitting power values,especially the power value of a feedback channel, will be a big problem.

A simple solution is that separate power control mechanisms arerespectively employed in groupcast and unicast to match respectivepathlosses on different radio links. However, when the power value onthe V2X link is limited, or an expected power value calculated based onpathloss is greater than a power value the terminal can afford, therewill be some deficiency in implementation. To address the issue, thepresent disclosure provides a solution. It should be noted that theembodiments in a first node, a second node and a third node of thepresent disclosure and the characteristics in the embodiments may beapplied to a base station, and the embodiments in a fourth node of thepresent disclosure and characteristics in the embodiments may be appliedto a terminal. In the present disclosure, the embodiments and thecharacteristics in the embodiments can be mutually combined if noconflict is incurred.

The present disclosure provides a method in a first node used forwireless communications, comprising:

receiving a first radio signal and a second radio signal;

determining a transmitting power of first control information in a firsttime window as a first power value and a transmitting power of secondcontrol information in a second time window as a second power value; and

transmitting first control information with the first power value in thefirst time window;

herein, the first control information is associated with the first radiosignal, and the second control information is associated with the secondradio signal; the first radio signal is unicast, while the second radiosignal is groupcast; the first power value is unrelated to the secondpower value, the second power value is relevant to whether the firsttime window overlaps with the second time window; a physical layerchannel format occupied by the first control information is the same asa physical layer channel format occupied by the second controlinformation.

In one embodiment, an advantage of the above method is that when atransmission of the first control information and a transmission of thesecond control information are overlapped in time domain, a transmittingpower value of the first control information shall be guaranteed in thefirst place, so that between feedback to groupcast and feedback tounicast, a transmitting power value of the feedback to unicast will befirst guaranteed, thus ensuring the performance of unicast transmissionin V2X as prioritized.

In one embodiment, the principle of the above method lies in that ingroupcast transmission, as long as a user in a terminal group feeds backNACK, a groupcast transmission will have to be retransmitted, and aHARQ-ACK feeding back from a single user in groupcast transmission onlypartially influence whether a retransmission shall be performed; but asfor unicast, whether a unicast transmission needs to be retransmitteddepends totally on the feedback to the unicast; therefore, the priorityof power allocation of the feedback to the unicast shall prevail overthat of the feedback to the groupcast.

According to one aspect of the present disclosure, the above method ischaracterized in comprising:

transmitting the second control information with the second power valuein the second time window;

herein, when the first time window overlaps with the second time window,a difference between a first remaining power value and the first powervalue is used to determine the second power value; when the first timewindow does not overlap with the second time window, the second powervalue is unrelated to the first power value.

In one embodiment, an advantage of the above method is that when thefirst control information and the second control information areoverlapped in time domain, the power will be first allocated to thefirst control information; when the first control information and thesecond control information are non-overlapped in time domain, the secondpower value and the first power value are determined independently.

According to one aspect of the present disclosure, the above method ischaracterized in comprising:

dropping a transmission of second control information in the second timewindow when the first time window overlaps with the second time window,the second power value being 0; or transmitting second controlinformation with the second power value in the second time window whenthe first time window does not overlap with the second time window, thesecond power value being unrelated to the first power value.

In one embodiment, an advantage of the above method is that when thefirst control information overlaps (that is, conflict) with the secondcontrol information in time domain and there is power limitation, afirst node drops transmitting the second control information, so as toensure that the first control information is transmitted with a largestpower value that the first node can afford, and thus ensuring theperformance of the first control information.

According to one aspect of the present disclosure, the above method ischaracterized in comprising:

transmitting a target radio signal with a target power value in a targettime window;

herein, the first radio signal and the second radio signal aretransmitted in sidelink, while the target radio signal is transmitted onuplink; the first power value is relevant to whether the first timewindow overlaps with the target time window, the target power value isunrelated to the first power value.

In one embodiment, an advantage of the above method is to further ensurethat the priority of power allocation of a channel on a Uu link ishigher than that on a sidelink, thus guaranteeing transmissionperformance on the Uu link.

According to one aspect of the present disclosure, the above method ischaracterized in comprising:

receiving a third radio signal; and

receiving a fourth radio signal;

herein, a transmitter of the first radio signal transmits the thirdradio signal, while a transmitter of the second radio signal transmitsthe fourth radio signal; the third radio signal is used to determine afirst expected power value, and the fourth radio signal is used todetermine a second expected power value; the first power value is equalto the first expected power value, the second power value is less thanthe second expected power value.

According to one aspect of the present disclosure, the above method ischaracterized in comprising:

receiving a first signaling;

receiving a second signaling;

herein, the first signaling comprises configuration information for thefirst radio signal, the configuration information comprises time domainresources occupied, frequency domain resources occupied, a Modulationand Coding Status (MCS), and a Redundancy Version (RV); the secondsignaling comprises configuration information for the second radiosignal, the configuration information comprises at least one of timedomain resources occupied, frequency domain resources occupied, an MCSor an RV.

The present disclosure provides a method in a second node used forwireless communications, comprising:

transmitting a first radio signal; and

receiving first control information in a first time window;

herein, the first control information is associated with the first radiosignal, the first radio signal is unicast; a transmitting power of thefirst control information in the first time window is a first powervalue; a transmitter of the first control information determines atransmitting power of second control information in a second time windowas a second power value, the second control information is associatedwith the second radio signal, and the second radio signal is groupcast;the first power value is unrelated to the second power value, the secondpower value is relevant to whether the first time window overlaps withthe second time window; a physical layer channel format occupied by thefirst control information is the same as a physical layer channel formatoccupied by the second control information.

According to one aspect of the present disclosure, the above method ischaracterized in comprising:

transmitting a third radio signal;

herein, the third radio signal is used to determine a first expectedpower value, the first power value is equal to the first expected powervalue.

According to one aspect of the present disclosure, the above method ischaracterized in comprising:

transmitting a first signaling;

herein, the first signaling comprises configuration information for thefirst radio signal, the configuration information comprises at least oneof time domain resources occupied, frequency domain resources occupied,an MCS or an RV.

The present disclosure provides a method in a third node used forwireless communications, comprising:

transmitting a second radio signal; and

receiving second control information in a second time window;

herein, the second control information is associated with the secondradio signal, the second radio signal is groupcast; a transmitting powerof the second control information in the second time window is a secondpower value; a transmitter of the second control information determinesa transmitting power of first control information in a first time windowas a first power value, the first control information is associated withthe first radio signal, and the first radio signal is unicast; the firstpower value is unrelated to the second power value, the second powervalue is relevant to whether the first time window overlaps with thesecond time window; a physical layer channel format occupied by thefirst control information is the same as a physical layer channel formatoccupied by the second control information.

According to one aspect of the present disclosure, the above method ischaracterized in comprising:

transmitting a fourth radio signal;

herein, the fourth radio signal is used to determine a second expectedpower value, the second power value is less than the second expectedpower value.

According to one aspect of the present disclosure, the above method ischaracterized in comprising:

transmitting a second signaling;

herein, the second signaling comprises configuration information for thesecond radio signal, the configuration information comprises at leastone of time domain resources occupied, frequency domain resourcesoccupied, an MCS or an RV.

The present disclosure provides a method in a fourth node used forwireless communications, comprising:

receiving a target radio signal in a target time window;

herein, a first radio signal and a second radio signal are transmittedin sidelink, while the target radio signal is transmitted on uplink;first control information is associated with the first radio signal, andsecond control information is associated with the second radio signal;the first radio signal is unicast, while the second radio signal isgroupcast; both a transmitter of the first radio signal and atransmitter of the second radio signal are non-co-located with thefourth node; a transmitting power of the first control information in afirst time window is a first power value, and a transmitting power ofthe second control information in a second time window is a second powervalue; the first power value is unrelated to the second power value, thesecond power value is relevant to whether the first time window overlapswith the second time window; a physical layer channel format occupied bythe first control information is the same as a physical layer channelformat occupied by the second control information; the first power valueis relevant to whether the first time window overlaps with the targettime window, the target power value is unrelated to the first powervalue.

The present disclosure provides a first node used for wirelesscommunications, comprising:

a first receiver, receiving a first radio signal and a second radiosignal;

a first processor, determining a transmitting power of first controlinformation in a first time window as a first power value and atransmitting power of second control information in a second time windowas a second power value; and

a first transmitter, transmitting first control information with thefirst power value in the first time window;

herein, the first control information is associated with the first radiosignal, and the second control information is associated with the secondradio signal; the first radio signal is unicast, while the second radiosignal is groupcast; the first power value is unrelated to the secondpower value, the second power value is relevant to whether the firsttime window overlaps with the second time window; a physical layerchannel format occupied by the first control information is the same asa physical layer channel format occupied by the second controlinformation.

The present disclosure provides a second node used for wirelesscommunications, comprising:

a second transmitter, transmitting a first radio signal; and

a second receiver, receiving first control information in a first timewindow;

herein, the first control information is associated with the first radiosignal, the first radio signal is unicast; a transmitting power of thefirst control information in the first time window is a first powervalue; a transmitter of the first control information determines atransmitting power of second control information in a second time windowas a second power value, the second control information is associatedwith the second radio signal, and the second radio signal is groupcast;the first power value is unrelated to the second power value, the secondpower value is relevant to whether the first time window overlaps withthe second time window; a physical layer channel format occupied by thefirst control information is the same as a physical layer channel formatoccupied by the second control information.

The present disclosure provides a third node used for wirelesscommunications, comprising:

a third transmitter, transmitting a second radio signal; and

a third receiver, receiving second control information in a second timewindow;

herein, the second control information is associated with the secondradio signal, the second radio signal is groupcast; a transmitting powerof the second control information in the second time window is a secondpower value; a transmitter of the second control information determinesa transmitting power of first control information in a first time windowas a first power value, the first control information is associated withthe first radio signal, and the first radio signal is unicast; the firstpower value is unrelated to the second power value, the second powervalue is relevant to whether the first time window overlaps with thesecond time window; a physical layer channel format occupied by thefirst control information is the same as a physical layer channel formatoccupied by the second control information.

The present disclosure provides a fourth node used for wirelesscommunications, comprising:

a fourth receiver, receiving a target radio signal in a target timewindow;

herein, a first radio signal and a second radio signal are transmittedin sidelink, while the target radio signal is transmitted in uplink;first control information is associated with the first radio signal, andsecond control information is associated with the second radio signal;the first radio signal is unicast, while the second radio signal isgroupcast; both a transmitter of the first radio signal and atransmitter of the second radio signal are non-co-located with thefourth node; a transmitting power of the first control information in afirst time window is a first power value, and a transmitting power ofthe second control information in a second time window is a second powervalue; the first power value is unrelated to the second power value, thesecond power value is relevant to whether the first time window overlapswith the second time window; a physical layer channel format occupied bythe first control information is the same as a physical layer channelformat occupied by the second control information; the first power valueis relevant to whether the first time window overlaps with the targettime window, the target power value is unrelated to the first powervalue.

In one embodiment, the present disclosure has the following advantagescompared with prior art:

When a transmission of the first control information is overlapped witha transmission of the second control information in time domain, atransmitting power value of the first control information shall first beguaranteed, and, when it comes to the feedback to groupcast and thefeedback to unicast, a transmitting power value for the feedback tounicast shall be ensured in preference to that for the feedback togroupcast, so as to ensure the performance of unicast transmission inV2X.

When there is power left over after prioritized power allocation to thefirst control information, the remaining power can be allocated to thesecond control information to ensure a transmission of the secondcontrol information; or a transmission of the second control informationis dropped in a second time window, thus conserving UE consumption.

When a transmission of the first control information is non-overlappedwith a transmission of the second control information in time domain,the first power value and the second power value are determinedindependently, thereby guaranteeing the performance of V2X transmission.

The priority of power allocation of a channel on a Uu link is furtherensured to be higher than that on a sidelink, namely, higher priority isgiven to power allocation of the target radio signal compared with thefirst control information so as to guarantee the transmissionperformance on the Uu link.

BRIEF DESCRIPTION OF THE DRAWINGS

Other features, objects and advantages of the present disclosure willbecome more apparent from the detailed description of non-restrictiveembodiments taken in conjunction with the following drawings:

FIG. 1 illustrates a flowchart of processing of a first node accordingto one embodiment of the present disclosure.

FIG. 2 illustrates a schematic diagram of a network architectureaccording to one embodiment of the present disclosure.

FIG. 3 illustrates a schematic diagram of a radio protocol architectureof a user plane and a control plane according to one embodiment of thepresent disclosure.

FIG. 4 illustrates a schematic diagram of a first communication deviceand a second communication device according to one embodiment of thepresent disclosure.

FIG. 5 illustrates a flowchart of first control information and secondcontrol information according to one embodiment of the presentdisclosure.

FIG. 6 illustrates a flowchart of first control information and secondcontrol information according to one embodiment of the presentdisclosure.

FIG. 7 illustrates a flowchart of a third radio signal and a fourthradio signal according to one embodiment of the present disclosure.

FIG. 8 illustrates a flowchart of a target radio signal according to oneembodiment of the present disclosure.

FIG. 9 illustrates a schematic diagram of a first time window and asecond time window according to one embodiment of the presentdisclosure.

FIG. 10 illustrates a schematic diagram of a first time window and asecond time window according to another embodiment of the presentdisclosure.

FIG. 11 illustrates a schematic diagram of a target time window and afirst time window according to one embodiment of the present disclosure.

FIG. 12 illustrates a schematic diagram of a first node, a second node,a third node and a fourth node according to one embodiment of thepresent disclosure.

FIG. 13 illustrates a flowchart of power allocation according to oneembodiment of the present disclosure.

FIG. 14 illustrates a structure block diagram of a first node accordingto one embodiment of the present disclosure.

FIG. 15 illustrates a structure block diagram of a second node accordingto one embodiment of the present disclosure.

FIG. 16 illustrates a structure block diagram of a third node accordingto one embodiment of the present disclosure.

FIG. 17 illustrates a structure block diagram of a fourth node accordingto one embodiment of the present disclosure.

DESCRIPTION OF THE EMBODIMENTS

The technical scheme of the present disclosure is described below infurther details in conjunction with the drawings. It should be notedthat the embodiments of the present disclosure and the characteristicsof the embodiments may be arbitrarily combined if no conflict is caused.

Embodiment 1

Embodiment 1 illustrates a flowchart of processing of a first node, asshown in FIG. 1. In step 100 of FIG. 1, each box represents a step. InEmbodiment 1, the first node of the present disclosure receives a firstradio signal and a second radio signal in step 101; determines atransmitting power of first control information in a first time windowas a first power value and a transmitting power of second controlinformation in a second time window as a second power value in step 102;and transmits first control information with the first power value inthe first time window.

In Embodiment 1, the first control information is associated with thefirst radio signal, and the second control information is associatedwith the second radio signal; the first radio signal is unicast, whilethe second radio signal is groupcast; the first power value is unrelatedto the second power value, the second power value is relevant to whetherthe first time window overlaps with the second time window; a physicallayer channel format occupied by the first control information is thesame as a physical layer channel format occupied by the second controlinformation.

In one embodiment, the above phrase that a physical layer channel formatoccupied by the first control information is the same as a physicallayer channel format occupied by the second control information meansthat the physical layer channel format occupied by the first controlinformation and the physical layer channel format occupied by the secondcontrol information are both PSFCHs.

In one embodiment, the first control information and the second controlinformation are both HARQ-ACKs.

In one embodiment, the first control information is feedback forunicast.

In one embodiment, the second control information is feedback forgroupcast.

In one embodiment, the first control information comprises a HARQ-ACK ofthe first radio signal.

In one embodiment, the second control information comprises a HARQ-ACKof the second radio signal.

In one embodiment, the second control information comprises a NACK ofthe second radio signal.

In one embodiment, the first radio signal is a Physical Sidelink SharedChannel (PSSCH) based on groupcast transmission.

In one embodiment, the second radio signal is a PSSCH based on groupcasttransmission.

In one embodiment, a first Transmission Block (TB) is used to generatethe first radio signal, a second TB is used to generate the second radiosignal, the first TB and the second TB are different from each other.

In one embodiment, the above phrase that the first control informationis associated with the first radio signal means that the first controlinformation is used to determine whether the first radio signal iscorrectly decoded.

In one embodiment, the above phrase that the second control informationis associated with the second radio signal means that the second controlinformation is used to determine whether the second radio signal iscorrectly decoded.

In one embodiment, the above phrase that the second control informationis associated with the second radio signal means that the second controlinformation is used to determine that the second radio signal isincorrectly decoded.

In one embodiment, the above phrase that the first control informationis associated with the first radio signal means that a measurement onthe first radio signal is used to generate the first controlinformation.

In one embodiment, the above phrase that the second control informationis associated with the second radio signal means that a measurement onthe second radio signal is used to generate the second controlinformation.

In one embodiment, the above phrase that the first control informationis associated with the first radio signal means that the first controlinformation is used to determine that the first radio signal iscorrectly received, or the first control information is used todetermine that the first radio signal is incorrectly received.

In one embodiment, the above phrase that the second control informationis associated with the second radio signal means that the second controlinformation is used to determine that the second radio signal iscorrectly received, or the second control information is used todetermine that the second radio signal is incorrectly received.

In one embodiment, the above phrase that the second control informationis associated with the second radio signal means that the second controlinformation is only used to determine that the second radio signal isincorrectly received.

In one embodiment, the above phrase that the first control informationis associated with the first radio signal means that the first controlinformation is Channel State Information (CSI) acquired by referring tothe first radio signal.

In one embodiment, the above phrase that the first control informationis associated with the first radio signal means that the second controlinformation is CSI acquired by referring to the second radio signal.

In one embodiment, a second node transmits the first radio signal, and athird node transmits the second radio signal, the second node and thethird node are non-co-located.

In one subembodiment of the above embodiment, the second node is aterminal.

In one subembodiment of the above embodiment, the third node is aterminal.

In one subembodiment of the above embodiment, the third node is a GroupHead.

In one subembodiment of the above embodiment, the above phrase that thesecond node and the third node are non-co-located includes at least oneof the following meanings:

The second node and the third node are different communication devices;

The second node and the third node respectively correspond to differenceIdentifiers (ID);

The second node and the third node are located at different places;

There is no wired connection between the second node and the third node.

In one embodiment, the first power value is equal to a first expectedpower value, the first expected power value is an expected power valueof the first control information without power scaling.

In one subembodiment, the first expected power value is related to apathloss between the second node and the first node.

In one subembodiment, the second power value is no greater than a secondexpected power value, the second expected power value is an expectedpower value of the second control information without power scaling.

In one subembodiment, the second expected power value is related to apathloss between the third node and the first node.

In one embodiment, the first control information and the second controlinformation are transmitted on a sidelink.

In one embodiment, the first control information and the second controlinformation are transmitted on a PC-5 link.

In one embodiment, the first radio signal and the second radio signalare transmitted on a sidelink.

In one embodiment, the first radio signal and the second radio signalare transmitted on a PC-5 link.

In one embodiment, a first signaling is used to schedule the first radiosignal, and the second signaling is used to schedule the second radiosignal, the first signaling is identified by a first identity, and thesecond signaling is identified by a second identity, the first identityand the second identity respectively indicate unicast and groupcast.

In one embodiment, the first radio signal and the second radio signalare respectively identified by a first identity and a second identity,and the first identity and the second identity respectively indicateunicast and groupcast.

In one embodiment, the first identity and the second identity of thepresent disclosure are both Radio Network Temporary Identifiers (RNTIs).

In one subembodiment, the first identity and the second identityrespectively correspond to different RNTIs.

In one subembodiment, the first identity is specific to the first node.

In one subembodiment, the second identity is specific to a terminalgroup, and the first node belongs to the terminal group.

In one embodiment, the first power value is greater than the secondpower value.

In one embodiment, the first power value is greater than 0, and thesecond power value is greater than or equal to 0.

In one embodiment, the first power value and the second power value aremeasured by dBm.

In one embodiment, the first power value and the second power value aremeasured by mW.

In one embodiment, the above phrase that the first power value isunrelated to the second power value means that the first power value isnot affected by the second power value.

In one embodiment, the above phrase that the first power value isunrelated to the second power value means that the second power value isnot used to determine the first power value.

In one embodiment, the above phrase that the first power value isunrelated to the second power value means that the first power value isfirst allocated to the first node.

In one embodiment, the above phrase that the first power value isunrelated to the second power value means that the second power value isallocated to the first node after allocation of the first power value iscompleted.

In one embodiment, the above phrase that the first power value isunrelated to the second power value means that the first power value isused to determine the second power value.

In one embodiment, the first time window is a slot.

In one embodiment, the first time window is a mini-slot.

In one embodiment, the first time window is a subframe.

In one embodiment, the second time window is a slot.

In one embodiment, the second time window is a mini-slot.

In one embodiment, the second time window is a subframe.

Embodiment 2

Embodiment 2 illustrates a schematic diagram of a network architecture,as shown in FIG. 2.

FIG. 2 is a diagram illustrating a network architecture 200 of 5G NR,Long-Term Evolution (LTE) and Long-Term Evolution Advanced (LTE-A)systems. The 5G NR or LTE network architecture 200 may be called anEvolved Packet System (EPS) 200 or other appropriate terms. The EPS 200may comprise one or more UEs 201, as well as a UE 241 in sidelinkcommunication with the UE 201 and a UE 242 in sidelink communicationwith the UE 201, an NG-RAN 202, an Evolved Packet Core/5G-Core Network(EPC/5G-CN) 210, a Home Subscriber Server (HSS) 220 and an InternetService 230. The EPS 200 may be interconnected with other accessnetworks. For simple description, the entities/interfaces are not shown.As shown in FIG. 2, the EPS 200 provides packet switching services.Those skilled in the art will find it easy to understand that variousconcepts presented throughout the present disclosure can be extended tonetworks providing circuit switching services or other cellularnetworks. The NG-RAN 202 comprises an NR node B (gNB) 203 and other gNBs204. The gNB 203 provides UE 201-oriented user plane and control planeterminations. The gNB 203 may be connected to other gNBs 204 via an Xninterface (for example, backhaul). The gNB 203 may be called a basestation, a base transceiver station, a radio base station, a radiotransceiver, a transceiver function, a Base Service Set (BSS), anExtended Service Set (ESS), a Transmitter Receiver Point (TRP) or someother applicable terms. The gNB 203 provides an access point of theEPC/5G-CN 210 for the UE 201. Examples of UE 201 include cellularphones, smart phones, Session Initiation Protocol (SIP) phones, laptopcomputers, Personal Digital Assistant (PDA), Satellite Radios,non-terrestrial base station communications, Global Positioning Systems(GPSs), multimedia devices, video devices, digital audio players (forexample, MP3 players), cameras, games consoles, unmanned aerialvehicles, air vehicles, narrow-band physical network equipment,machine-type communication equipment, land vehicles, automobiles,wearable equipment, or any other devices having similar functions. Thoseskilled in the art also can call the UE 201 a mobile station, asubscriber station, a mobile unit, a subscriber unit, a wireless unit, aremote unit, a mobile device, a wireless device, a radio communicationdevice, a remote device, a mobile subscriber station, an accessterminal, a mobile terminal, a wireless terminal, a remote terminal, ahandset, a user proxy, a mobile client, a client, a vehicle terminal,V2X equipment or some other appropriate terms. The gNB 203 is connectedto the EPC/5G-CN 210 via an S1/NG interface. The EPC/5G-CN 210 comprisesa Mobility Management Entity (MME)/Authentication Management Field(AMF)/User Plane Function (UPF) 211, other MMEs/AMFs/UPFs 214, a ServiceGateway (S-GW) 212 and a Packet Date Network Gateway (P-GW) 213. TheMME/AMF/UPF 211 is a control node for processing a signaling between theUE 201 and the EPC/5G-CN 210. Generally, the MME/AMF/UPF 211 providesbearer and connection management. All user Internet Protocol (IP)packets are transmitted through the S-GW 212. The S-GW 212 is connectedto the P-GW 213. The P-GW 213 provides UE IP address allocation andother functions. The P-GW 213 is connected to the Internet Service 230.The Internet Service 230 comprises IP services corresponding tooperators, specifically including Internet, Intranet, IP MultimediaSubsystem (IMS) and Packet Switching Streaming (PSS) services.

In one embodiment, the UE 201 corresponds to the first node of thepresent disclosure.

In one embodiment, the UE 241 corresponds to the second node of thepresent disclosure.

In one embodiment, the UE 242 corresponds to the third node of thepresent disclosure.

In one embodiment, the gNB 203 corresponds to the fourth node of thepresent disclosure.

In one embodiment, an air interface between the UE 201 and the gNB 203is a Uu interface.

In one embodiment, an air interface between the UE 201 and the UE 241 isa PC-5 interface.

In one embodiment, an air interface between the UE 201 and the UE 242 isa PC-5 interface.

In one embodiment, a radio link between the UE 201 and the gNB 203 is acellular link.

In one embodiment, a radio link between the UE 201 and the UE 241 is asidelink.

In one embodiment, a radio link between the UE 201 and the UE 242 is asidelink.

In one embodiment, the second node of the present disclosure is aterminal within the coverage of the gNB 203.

In one embodiment, the second node of the present disclosure is aterminal out of the coverage of the gNB 203.

In one embodiment, the third node of the present disclosure is aterminal within the coverage of the gNB 203.

In one embodiment, the third node of the present disclosure is aterminal out of the coverage of the gNB 203.

In one embodiment, the first node and the second node belong to a V2Xpair.

In one embodiment, the first node and the second node communicatethrough unicast-based V2X communications.

In one embodiment, the first node and the third node belong to aterminal group.

In one embodiment, the first node and the third node communicate throughgroupcast-based V2X communications.

In one embodiment, the first node is an automobile.

In one embodiment, the second node is an automobile.

In one embodiment, the third node is an automobile.

In one embodiment, the first node is a vehicle.

In one embodiment, the second node is a vehicle.

In one embodiment, the third node is a vehicle.

In one embodiment, the fourth node is a base station.

In one embodiment, the third node is a Road Side Unit (RSU).

In one embodiment, the third node is a Group Head of a terminal group.

Embodiment 3

Embodiment 3 illustrates a schematic diagram of a radio protocolarchitecture of a user plane and a control plane, as shown in FIG. 3.FIG. 3 is a schematic diagram illustrating a radio protocol architectureof a user plane 350 and a control plane 300. In FIG. 3, the radioprotocol architecture for a control plane 300 between a firstcommunication node (UE, gNB or RSU in V2X) and a second communicationnode (gNB, UE, or RSU in V2X), or between two UEs is represented bythree layers, which are a layer 1, a layer 2 and a layer 3,respectively. The layer 1 (L1) is the lowest layer which performs signalprocessing functions of various PHY layers. The L1 is called PHY 301 inthe present disclosure. The layer 2 (L2) 305 is above the PHY 301, andis in charge of the link between a first communication node and a secondcommunication node, and between two UEs via the PHY 301. In the userplane, L2 305 comprises a Medium Access Control (MAC) sublayer 302, aRadio Link Control (RLC) sublayer 303 and a Packet Data ConvergenceProtocol (PDCP) sublayer 304. All the three sublayers terminate at thesecond communication nodes of the network side. The PDCP sublayer 304provides multiplexing between varied radio bearers and logical channels.The PDCP sublayer 304 also provides security by encrypting a packet andprovides support for the handover of first communication node betweensecond communication nodes. The RLC sublayer 303 provides segmentationand reassembling of a higher-layer packet, retransmission of a lostpacket, and reordering of a packet so as to compensate the disorderedreceiving caused by HARQ. The MAC sublayer 302 provides multiplexingbetween a logical channel and a transport channel. The MAC sublayer 302is also responsible for allocating between first communication nodesvarious radio resources (i.e., resource block) in a cell. The MACsublayer 302 is also in charge of HARQ operation. In the control plane300, a Radio Resource Control (RRC) sublayer 306 in layer 3 (L3 layer)is responsible for acquiring radio resources (i.e., radio bearer) andconfiguring the lower layer using an RRC signaling between the secondcommunication node and the first communication node. A radio protocolarchitecture for the user plane 350 comprises a layer 1 (L1) and a layer2 (L2). In the user plane 350, the radio protocol architecture used forthe first communication node and the second communication node appliedin a physical layer 351, a PDCP sublayer 354 in the L2 layer 355, a RLCsublayer 353 in the L2 layer 355 and a MAC sublayer 352 in the L2 layer355 is almost the same as that applied in counterpart layers andsublayers in the control plane 300. But the PDCP sublayer 354 alsoprovides header compression for a higher-layer packet to reduce radiotransmission overhead. The L2 layer 355 in the user plane 350 alsocomprises a Service Data Adaptation Protocol (SDAP) sublayer 356, andthe SDAP sublayer 356 is in charge of the mapping from QoS stream toData Radio Bearer (DRB) as a way to support diversity in traffic.Although not described in FIG. 3, the UE may comprise several higherlayers above the L2 355, such as a network layer (i.e., IP layer)terminated at a P-GW 213 of the network side and an application layerterminated at the other side of the connection (i.e., a peer UE, aserver, etc.).

In one embodiment, the radio protocol architecture in FIG. 3 isapplicable to the first node of the present disclosure.

In one embodiment, the radio protocol architecture in FIG. 3 isapplicable to the second node of the present disclosure.

In one embodiment, the radio protocol architecture in FIG. 3 isapplicable to the third node of the present disclosure.

In one embodiment, the radio protocol architecture in FIG. 3 isapplicable to the fourth node of the present disclosure.

In one embodiment, the first radio signal is generated by the PHY 301 orthe PHY 351.

In one embodiment, the first radio signal is generated by the MAC 352 orthe MAC 302.

In one embodiment, the second radio signal is generated by the PHY 301or the PHY 351.

In one embodiment, the second radio signal is generated by the MAC 352or the MAC 302.

In one embodiment, the first control information is generated by the PHY301 or the PHY 351.

In one embodiment, the first control information is generated by the MAC352 or the MAC 302.

In one embodiment, the second control information is generated by thePHY 301, or the PHY 351.

In one embodiment, the second control information is generated by theMAC 352 or the MAC 302.

In one embodiment, the third radio signal is generated by the PHY 301 orthe PHY 351.

In one embodiment, the third radio signal is generated by the MAC 352 orthe MAC 302.

In one embodiment, the fourth radio signal is generated by the PHY 301or the PHY 351.

In one embodiment, the fourth radio signal is generated by the MAC 352or the MAC 302.

In one embodiment, the first signaling is generated by the PHY 301 orthe PHY 351.

In one embodiment, the second signaling is generated by the PHY 301 orthe PHY 351.

In one embodiment, the target radio signal is generated by the PHY 301or the PHY 351.

In one embodiment, the target radio signal is generated by the MAC 352or the MAC 302.

Embodiment 4

Embodiment 4 illustrates a schematic diagram of a first communicationdevice and a second communication device according to the presentdisclosure, as shown in FIG. 4. FIG. 4 is a block diagram of a firstcommunication device 450 and a second communication device 410 incommunication with each other in an access network.

The first communication device 450 comprises a controller/processor 459,a memory 460, a data source 467, a transmitting processor 468, areceiving processor 456, a multi-antenna transmitting processor 457, amulti-antenna receiving processor 458, a transmitter/receiver 454 and anantenna 452.

The second communication device 410 comprises a controller/processor475, a memory 476, a receiving processor 470, a transmitting processor416, a multi-antenna receiving processor 472, a multi-antennatransmitting processor 471, a transmitter/receiver 418 and an antenna420.

In a transmission from the second communication device 410 to the firstcommunication device 450, at the second communication device 410, ahigher layer packet from a core network is provided to thecontroller/processor 475. The controller/processor 475 implements thefunctionality of the L2 layer. In the transmission from the secondcommunication device 410 to the first communication device 450, thecontroller/processor 475 provides header compression, encryption, packetsegmentation and reordering, multiplexing between a logical channel anda transport channel and radio resource allocation of the firstcommunication device 450 based on various priorities. Thecontroller/processor 475 is also in charge of a retransmission of a lostpacket and a signaling to the first communication device 450. Thetransmitting processor 416 and the multi-antenna transmitting processor471 perform various signal processing functions used for the L1 layer(i.e., PHY). The transmitting processor 416 performs coding andinterleaving so as to ensure a Forward Error Correction (FEC) at thesecond communication device 410 side and the mapping of signal clusterscorresponding to each modulation scheme (i.e., BPSK, QPSK, M-PSK, andM-QAM, etc.). The multi-antenna transmitting processor 471 performsdigital spatial precoding, including codebook-based precoding andnon-codebook-based precoding, and beamforming processing on encoded andmodulated signals to generate one or more spatial streams. Thetransmitting processor 416 then maps each spatial stream into asubcarrier. The mapped symbols are multiplexed with a reference signal(i.e., pilot frequency) in time domain and/or frequency domain, and thenthey are assembled through Inverse Fast Fourier Transform (IFFT) togenerate a physical channel carrying time-domain multicarrier symbolstreams. After that the multi-antenna transmitting processor 471performs transmission analog precoding/beamforming on the time-domainmulticarrier symbol streams. Each transmitter 418 converts a basebandmulticarrier symbol stream provided by the multi-antenna transmittingprocessor 471 into a radio frequency (RF) stream, which is laterprovided to antennas 420.

In a transmission from the second communication device 410 to the firstcommunication device 450, at the first communication device 450, eachreceiver 454 receives a signal via a corresponding antenna 452. Eachreceiver 454 recovers information modulated onto the RF carrier, andconverts the radio frequency stream into a baseband multicarrier symbolstream to be provided to the receiving processor 456. The receivingprocessor 456 and the multi-antenna receiving processor 458 performsignal processing functions of the L1 layer. The multi-antenna receivingprocessor 458 performs reception analog precoding/beamforming on abaseband multicarrier symbol stream provided by the receiver 454. Thereceiving processor 456 converts the processed baseband multicarriersymbol stream from time domain into frequency domain using FFT. Infrequency domain, a physical layer data signal and a reference signalare de-multiplexed by the receiving processor 456, wherein the referencesignal is used for channel estimation, while the data signal issubjected to multi-antenna detection in the multi-antenna receivingprocessor 458 to recover any first communication device 450-targetedspatial stream. Symbols on each spatial stream are demodulated andrecovered in the receiving processor 456 to generate a soft decision.Then the receiving processor 456 decodes and de-interleaves the softdecision to recover the higher-layer data and control signal transmittedby the second communication device 410. Next, the higher-layer data andcontrol signal are provided to the controller/processor 459. Thecontroller/processor 459 performs functions of the L2 layer. Thecontroller/processor 459 can be associated with a memory 460 that storesprogram code and data. The memory 460 can be called a computer readablemedium. In the transmission from the second communication device 410 tothe first communication device 450, the controller/processor 459provides demultiplexing between a transport channel and a logicalchannel, packet reassembling, decrypting, header decompression andcontrol signal processing so as to recover a higher-layer packet fromthe core network. The higher-layer packet is later provided to allprotocol layers above the L2 layer, or various control signals can beprovided to the L3 layer for processing.

In a transmission from the first communication device 450 to the secondcommunication device 410, at the first communication device 450, thedata source 467 is configured to provide a higher-layer packet to thecontroller/processor 459. The data source 467 represents all protocollayers above the L2 layer. Similar to a transmitting function of thesecond communication device 410 described in the transmission from thesecond communication device 410 to the first communication device 450,the controller/processor 459 performs header compression, encryption,packet segmentation and reordering, and multiplexing between a logicalchannel and a transport channel based on radio resource allocation so asto provide the L2 layer functions used for the user plane and thecontrol plane. The controller/processor 459 is also responsible for aretransmission of a lost packet, and a signaling to the secondcommunication device 410. The transmitting processor 468 performsmodulation and mapping, as well as channel coding, and the multi-antennatransmitting processor 457 performs digital multi-antenna spatialprecoding, including codebook-based precoding and non-codebook-basedprecoding, and beamforming. The transmitting processor 468 thenmodulates generated spatial streams into multicarrier/single-carriersymbol streams. The modulated symbol streams, after being subjected toanalog precoding/beamforming in the multi-antenna transmitting processor457, are provided from the transmitter 454 to each antenna 452. Eachtransmitter 454 first converts a baseband symbol stream provided by themulti-antenna transmitting processor 457 into a radio frequency symbolstream, and then provides the radio frequency symbol stream to theantenna 452.

In a transmission from the first communication device 450 to the secondcommunication device 410, the function of the second communicationdevice 410 is similar to the receiving function of the firstcommunication device 450 described in the transmission from the secondcommunication device 410 to the first communication device 450. Eachreceiver 418 receives a radio frequency signal via a correspondingantenna 420, converts the received radio frequency signal into abaseband signal, and provides the baseband signal to the multi-antennareceiving processor 472 and the receiving processor 470. The receivingprocessor 470 and the multi-antenna receiving processor 472 jointlyprovide functions of the L1 layer. The controller/processor 475 providesfunctions of the L2 layer. The controller/processor 475 can beassociated with the memory 476 that stores program code and data. Thememory 476 can be called a computer readable medium. In the transmissionfrom the first communication device 450 to the second communicationdevice 410, the controller/processor 475 provides de-multiplexingbetween a transport channel and a logical channel, packet reassembling,decrypting, header decompression, control signal processing so as torecover a higher-layer packet from the first communication device (UE)450. The higher-layer packet coming from the controller/processor 475may be provided to the core network.

In one embodiment, the first communication device 450 comprises at leastone processor and at least one memory. The at least one memory comprisescomputer program codes; the at least one memory and the computer programcodes are configured to be used in collaboration with the at least oneprocessor. The first communication device 450 at least receives a firstradio signal and a second radio signal; determines a transmitting powerof first control information in a first time window as a first powervalue and a transmitting power of second control information in a secondtime window as a second power value; and transmits first controlinformation with the first power value in the first time window; thefirst control information is associated with the first radio signal, andthe second control information is associated with the second radiosignal; the first radio signal is unicast, while the second radio signalis groupcast; the first power value is unrelated to the second powervalue, the second power value is relevant to whether the first timewindow overlaps with the second time window; a physical layer channelformat occupied by the first control information is the same as aphysical layer channel format occupied by the second controlinformation.

In one embodiment, the first communication device 450 comprises a memorythat stores a computer readable instruction program. The computerreadable instruction program generates an action when executed by atleast one processor. The action includes receiving a first radio signaland a second radio signal; determining a transmitting power of firstcontrol information in a first time window as a first power value and atransmitting power of second control information in a second time windowas a second power value; and transmitting first control information withthe first power value in the first time window; the first controlinformation is associated with the first radio signal, and the secondcontrol information is associated with the second radio signal; thefirst radio signal is unicast, while the second radio signal isgroupcast; the first power value is unrelated to the second power value,the second power value is relevant to whether the first time windowoverlaps with the second time window; a physical layer channel formatoccupied by the first control information is the same as a physicallayer channel format occupied by the second control information.

In one embodiment, the second communication device 410 comprises atleast one processor and at least one memory. The at least one memorycomprises computer program codes. The at least one memory and thecomputer program codes are configured to be used in collaboration withthe at least one processor. The second communication device 410 at leasttransmits a first radio signal; and receives first control informationin a first time window; the first control information is associated withthe first radio signal, the first radio signal is unicast; atransmitting power of the first control information in the first timewindow is a first power value; a transmitter of the first controlinformation determines a transmitting power of second controlinformation in a second time window as a second power value, the secondcontrol information is associated with the second radio signal, and thesecond radio signal is groupcast; the first power value is unrelated tothe second power value, the second power value is relevant to whetherthe first time window overlaps with the second time window; a physicallayer channel format occupied by the first control information is thesame as a physical layer channel format occupied by the second controlinformation.

In one embodiment, the second communication device 410 comprises amemory that stores a computer readable instruction program. The computerreadable instruction program generates an action when executed by atleast one processor. The action includes transmitting a first radiosignal; and receiving first control information in a first time window;the first control information is associated with the first radio signal,the first radio signal is unicast; a transmitting power of the firstcontrol information in the first time window is a first power value; atransmitter of the first control information determines a transmittingpower of second control information in a second time window as a secondpower value, the second control information is associated with thesecond radio signal, and the second radio signal is groupcast; the firstpower value is unrelated to the second power value, the second powervalue is relevant to whether the first time window overlaps with thesecond time window; a physical layer channel format occupied by thefirst control information is the same as a physical layer channel formatoccupied by the second control information.

In one embodiment, the second communication device 410 comprises atleast one processor and at least one memory. The at least one memorycomprises computer program codes. The at least one memory and thecomputer program codes are configured to be used in collaboration withthe at least one processor. The second communication device 410 at leasttransmits a second radio signal; and receives second control informationin a second time window; the second control information is associatedwith the second radio signal, the second radio signal is groupcast; atransmitting power of the second control information in the second timewindow is a second power value; a transmitter of the second controlinformation determines a transmitting power of first control informationin a first time window as a first power value, the first controlinformation is associated with the first radio signal, and the firstradio signal is unicast; the first power value is unrelated to thesecond power value, the second power value is relevant to whether thefirst time window overlaps with the second time window; a physical layerchannel format occupied by the first control information is the same asa physical layer channel format occupied by the second controlinformation.

In one embodiment, the second communication device 410 comprises amemory that stores a computer readable instruction program. The computerreadable instruction program generates an action when executed by atleast one processor. The action includes transmitting a second radiosignal; and receiving second control information in a second timewindow; the second control information is associated with the secondradio signal, the second radio signal is groupcast; a transmitting powerof the second control information in the second time window is a secondpower value; a transmitter of the second control information determinesa transmitting power of first control information in a first time windowas a first power value, the first control information is associated withthe first radio signal, and the first radio signal is unicast; the firstpower value is unrelated to the second power value, the second powervalue is relevant to whether the first time window overlaps with thesecond time window; a physical layer channel format occupied by thefirst control information is the same as a physical layer channel formatoccupied by the second control information.

In one embodiment, the second communication device 410 comprises atleast one processor and at least one memory. The at least one memorycomprises computer program codes. The at least one memory and thecomputer program codes are configured to be used in collaboration withthe at least one processor. The second communication device 410 at leastreceives a target radio signal in a target time window; a first radiosignal and a second radio signal are transmitted in sidelink, while thetarget radio signal is transmitted on uplink; first control informationis associated with the first radio signal, and second controlinformation is associated with the second radio signal; the first radiosignal is unicast, while the second radio signal is groupcast; both atransmitter of the first radio signal and a transmitter of the secondradio signal are non-co-located with the fourth node; a transmittingpower of the first control information in a first time window is a firstpower value, and a transmitting power of the second control informationin a second time window is a second power value; the first power valueis unrelated to the second power value, the second power value isrelevant to whether the first time window overlaps with the second timewindow; a physical layer channel format occupied by the first controlinformation is the same as a physical layer channel format occupied bythe second control information; the first power value is relevant towhether the first time window overlaps with the target time window, thetarget power value is unrelated to the first power value.

In one embodiment, the second communication device 410 comprises amemory that stores a computer readable instruction program. The computerreadable instruction program generates an action when executed by atleast one processor. The action includes receiving a target radio signalin a target time window; a first radio signal and a second radio signalare transmitted in sidelink, while the target radio signal istransmitted on uplink; first control information is associated with thefirst radio signal, and second control information is associated withthe second radio signal; the first radio signal is unicast, while thesecond radio signal is groupcast; both a transmitter of the first radiosignal and a transmitter of the second radio signal are non-co-locatedwith the fourth node; a transmitting power of the first controlinformation in a first time window is a first power value, and atransmitting power of the second control information in a second timewindow is a second power value; the first power value is unrelated tothe second power value, the second power value is relevant to whetherthe first time window overlaps with the second time window; a physicallayer channel format occupied by the first control information is thesame as a physical layer channel format occupied by the second controlinformation; the first power value is relevant to whether the first timewindow overlaps with the target time window, the target power value isunrelated to the first power value.

In one embodiment, the first communication device 450 corresponds to thefirst node of the present disclosure.

In one embodiment, the second communication device 410 corresponds tothe second node of the present disclosure.

In one embodiment, the second communication device 410 corresponds tothe third node of the present disclosure.

In one embodiment, the second communication device 410 corresponds tothe fourth node of the present disclosure.

In one embodiment, the first communication device 450 is a UE.

In one embodiment, the second communication device 410 is a UE.

In one embodiment, the second communication device 410 is a basestation.

In one embodiment, at least one of the antenna 452, the receiver 454,the multi-antenna receiving processor 458, the receiving processor 456,or the controller/processor 459 is used to receive a first radio signaland a second radio signal; at least one of the antenna 420, thetransmitter 418, the multi-antenna transmitting processor 471, thetransmitting processor 416, or the controller/processor 475 is used totransmit a first radio signal and a second radio signal.

In one embodiment, at least one of the antenna 452, the transmitter 454,the multi-antenna transmitting processor 457, the transmitting processor468, or the controller/processor 459 is used to determine a transmittingpower of first control information in a first time window as a firstpower value and a transmitting power of second control information in asecond time window as a second power value.

In one embodiment, at least one of the antenna 452, the transmitter 454,the multi-antenna transmitting processor 457, the transmitting processor468, or the controller/processor 459 is used to transmit first controlinformation with the first power value in the first time window; atleast one of the antenna 420, the receiver 418, the multi-antennareceiving processor 472, the receiving processor 470, or thecontroller/processor 475 is used to receive the first controlinformation in the first time window.

In one embodiment, at least one of the antenna 452, the transmitter 454,the multi-antenna transmitting processor 457, the transmitting processor468, or the controller/processor 459 is used to transmit second controlinformation with the second power value in the second time window.

In one embodiment, at least one of the antenna 452, the transmitter 454,the multi-antenna transmitting processor 457, the transmitting processor468, or the controller/processor 459 is used to drop transmitting secondcontrol information in the second time window when the first time windowoverlaps with the second time window, the second power value being 0.

In one embodiment, at least one of the antenna 452, the transmitter 454,the multi-antenna transmitting processor 457, the transmitting processor468, or the controller/processor 459 is used to transmit second controlinformation with the second power in the second time window when thefirst time window does not overlap with the second time window, thesecond power value being unrelated to the first power value.

In one embodiment, at least one of the antenna 420, the receiver 418,the multi-antenna receiving processor 472, the receiving processor 470,or the controller/processor 475 is used to receive second controlinformation in the second time window.

In one embodiment, at least one of the antenna 452, the transmitter 454,the multi-antenna transmitting processor 457, the transmitting processor468, or the controller/processor 459 is used to transmit a target radiosignal with a target power value in a target time window; at least oneof the antenna 420, the receiver 418, the multi-antenna receivingprocessor 472, the receiving processor 470, or the controller/processor475 is used to receive a target radio signal in a target time window.

In one embodiment, at least one of the antenna 452, the receiver 454,the multi-antenna receiving processor 458, the receiving processor 456,or the controller/processor 459 is used to receive a third radio signal;at least one of the antenna 420, the transmitter 418, the multi-antennatransmitting processor 471, the transmitting processor 416, or thecontroller/processor 475 is used to transmit a third radio signal.

In one embodiment, at least one of the antenna 452, the receiver 454,the multi-antenna receiving processor 458, the receiving processor 456,or the controller/processor 459 is used to receive a fourth radiosignal; at least one of the antenna 420, the transmitter 418, themulti-antenna transmitting processor 471, the transmitting processor416, or the controller/processor 475 is used to transmit a fourth radiosignal.

In one embodiment, at least one of the antenna 452, the receiver 454,the multi-antenna receiving processor 458, the receiving processor 456,or the controller/processor 459 is used to receive a first signaling; atleast one of the antenna 420, the transmitter 418, the multi-antennatransmitting processor 471, the transmitting processor 416, or thecontroller/processor 475 is used to transmit a first signaling.

In one embodiment, at least one of the antenna 452, the receiver 454,the multi-antenna receiving processor 458, the receiving processor 456,or the controller/processor 459 is used to receive a second signaling;at least one of the antenna 420, the transmitter 418, the multi-antennatransmitting processor 471, the transmitting processor 416, or thecontroller/processor 475 is used to transmit a second signaling.

Embodiment 5

Embodiment 5 illustrates a flowchart of first control information andsecond control information, as shown in FIG. 5. In FIG. 5, a first nodeU1 and a second node U2 are in communication via sidelink, and a firstnode U1 and a third node U3 are in communication via sidelink.

The first node U1 receives a first radio signal and a second radiosignal in step S10; determines a transmitting power of first controlinformation in a first time window as a first power value and atransmitting power of second control in a second time window as a secondpower value in step S11; transmits first control information in thefirst time window with the first power value in step S12; and transmitssecond control information in the second time window with the secondpower value in step S13.

The second node U2 transmits a first radio signal in step S20; andreceives first control information in a first time window in step S21.

The third node U3 transmits a second radio signal in step S30; andreceives second control information in a second time window in step S31.

In Embodiment 5, the first control information is associated with thefirst radio signal, and the second control information is associatedwith the second radio signal; the first radio signal is unicast, whilethe second radio signal is groupcast; the first power value is unrelatedto the second power value, the second power value is relevant to whetherthe first time window overlaps with the second time window; a physicallayer channel format occupied by the first control information is thesame as a physical layer channel format occupied by the second controlinformation; when the first time window overlaps with the second timewindow, a difference between a first remaining power value and the firstpower value is used to determine the second power value; when the firsttime window does not overlap with the second time window, the secondpower value is unrelated to the first power value.

In one embodiment, the first remaining power value is measured by dBm.

In one embodiment, the first remaining power value is measured by mW.

In one embodiment, the second power value is equal to a differencebetween the first remaining power value and the first power value.

In one embodiment, the first remaining power value is a transmittingpower value acquired from a maximum transmitting power value minus atotal transmitting power value of all radio signals other than the firstcontrol information and the second control information.

In one subembodiment, the maximum transmitting power value is measuredby dBm, or the maximum transmitting power value is measured by mW.

In one subembodiment, the maximum transmitting power value is 23 dBm.

In one subembodiment, the maximum transmitting power value is a sum of23 dBm and a first offset.

In one subsidiary embodiment of the above subembodiment, the firstoffset is configurable.

In one subsidiary embodiment of the above subembodiment, the firstoffset is dependent on a first frequency band, the first controlinformation and the second control information are transmitted on thefirst frequency band.

In one subembodiment, the maximum transmitting power value is a largestpower value of the first node that can be used for sidelink transmissionon the first frequency band, the first control information and thesecond control information are transmitted on the first frequency band.

In one subembodiment, any radio signal of all radio signals other thanthe first control information and the second control information is of ahigher priority than the first control information and the secondcontrol information.

In one embodiment, the above phrase that the first time window overlapswith the second time window means that at least one multicarrier symbolbelongs to the first time window and the second time windowsimultaneously.

In one embodiment, the above phrase that the first time window does notoverlap with the second time window means that there is no multicarriersymbol that belongs to the first time window and the second time windowsimultaneously.

In one embodiment, the multicarrier symbol of the present disclosure isan Orthogonal Frequency Division Multiplexing (OFDM) symbol.

In one embodiment, the multicarrier symbol of the present disclosure isa SC— Single Carrier-Frequency Division Multiple Access (FDMA) symbol.

In one embodiment, the multicarrier symbol of the present disclosure isa Filter Bank Multi Carrier (FBMC) symbol.

In one embodiment, the multicarrier symbol of the present disclosure isa Cyclic Prefix (CP).

Embodiment 6

Embodiment 6 illustrates another flowchart of first control informationand second control information, as shown in FIG. 6. In FIG. 6, a firstnode U4 and a second node U5 are in communication via sidelink, and afirst node U4 and a third node U6 are in communication via sidelink. Theembodiments in Embodiment 6 can be applied to Embodiment 5 if noconflict is incurred.

The first node U4 receives a first radio signal and a second radiosignal in step S40; determines a transmitting power of first controlinformation in a first time window as a first power value and atransmitting power of second control in a second time window as a secondpower value in step S41; transmits first control information in thefirst time window with the first power value in step S42; and dropstransmitting second control information in the second time window instep S43.

The second node U5 transmits a first radio signal in step S50; andreceives first control information in a first time window in step S51.

The third node U6 transmits a second radio signal in step S60; andreceives second control information in a second time window in step S61.

In Embodiment 6, the first control information is associated with thefirst radio signal, and the second control information is associatedwith the second radio signal; the first radio signal is unicast, whilethe second radio signal is groupcast; the first power value is unrelatedto the second power value, the second power value is relevant to whetherthe first time window overlaps with the second time window; a physicallayer channel format occupied by the first control information is thesame as a physical layer channel format occupied by the second controlinformation; the first time window is overlapped with the second timewindow, the second power value is 0.

In one embodiment, the above phrase that the first node U4 dropstransmitting second control information in the second time window meansthat the first node U4 does not transmit the second control informationin the second time window.

In one embodiment, the above phrase that the first node U4 dropstransmitting second control information in the second time window meansthat the first node U4 defers the transmission of the second controlinformation.

In one embodiment, the above phrase that the first node U4 dropstransmitting second control information in the second time window meansthat the first node U4 stores the second control information in buffer,and transmits the second control information in a time window behind thesecond time window.

Embodiment 7

Embodiment 7 illustrates a flowchart of a third radio signal and afourth radio signal, as shown in FIG. 7. In FIG. 7, a first node U7 anda second node U8 are in communication via sidelink, and a first node U7and a third node U8 are in communication via sidelink. The embodimentsin Embodiment 7 can be applied to Embodiment 5 if no conflict isincurred.

The first node U7 receives a first signaling in step S70, receives athird radio signal in step S71; receives a second signaling in step S72;and receives a fourth radio signal in step S73.

The second node U8 transmits a first signaling in step S80; andtransmits a third radio signal in step S81.

The third node U9 transmits a second signaling in step S90; andtransmits a fourth radio signal in step S91.

In Embodiment 7, the first signaling comprises configuration of thefirst radio signal, the configuration information comprises at least oneof time domain resources occupied, frequency domain resources occupied,an MCS or an RV; the second signaling comprises configurationinformation of the second radio signal, the configuration informationcomprises at least one of time domain resources, frequency domainresources, an MCS or an RV; the third radio signal is used to determinea first expected power value, and the fourth radio signal is used todetermine a second expected power value; the first power value is equalto the first expected power value, and the second power value is lessthan the second expected power value.

In one embodiment, the third radio signal is used to determine apathloss from the second node to the first node, and the pathloss fromthe second node to the first node is used to determine the firstexpected power value.

In one embodiment, the fourth radio signal is used to determine apathloss from the third node to the first node, and the pathloss fromthe third node to the first node is used to determine the secondexpected power value.

In one embodiment, the third radio signal includes a Channel StateInformation Reference Signal (CSI-RS) in sidelink.

In one embodiment, the fourth radio signal includes a CSI-RS insidelink.

In one embodiment, the first radio signal includes the third radiosignal.

In one embodiment, the second radio signal includes the fourth radiosignal.

In one embodiment, the first expected power value is measured by dBm.

In one embodiment, the first expected power value is measured by mW.

In one embodiment, the second expected power value is measured by dBm.

In one embodiment, the second expected power value is measured by mW.

Embodiment 8

Embodiment 8 illustrates a flowchart of a target radio signal, as shownin FIG. 8. In FIG. 8, a first node U10 and a fourth node N11 are incommunication via a cellular link. The embodiments in Embodiment 8 canbe applied to Embodiment 5.

The first node U10 transmits a target radio signal with a target powervalue in a target time window in step S110.

The second node N11 receives a target radio signal in a target timewindow in step S111.

In Embodiment 8, the first radio signal of the present disclosure andthe second radio signal of the present disclosure are transmitted insidelink, while the target radio signal is transmitted on uplink; thefirst power value of the present disclosure is relevant to whether thefirst time window of the present disclosure overlaps with the targettime window of the present disclosure, the target power value isunrelated to the first power value.

In one embodiment, the target power value is an expected transmittingpower of the target radio signal without power scaling.

In one embodiment, the target power value is related to a pathloss onthe uplink.

In one embodiment, the uplink is a Uu link.

In one embodiment, the uplink is a radio link from a terminal to a basestation.

In one embodiment, when the first time window is overlapped with thetarget time window, a difference between a target remaining power valueand the target power value is used to determine the first power value;when the first time window is non-overlapped with the target timewindow, the first power value is unrelated to the target power value.

In one subembodiment, the target remaining power value is a transmittingpower value acquired from a maximum transmitting power value minus atotal transmitting power value of all radio signals other than thetarget radio signal.

In one subsidiary embodiment of the above subembodiment, any radiosignal of all radio signals other than the target radio signal is of ahigher priority than the target radio signal.

In one embodiment, the phrase that the target power value is unrelatedto the first power value includes the meanings that the target powervalue is not affected by the first power value.

In one embodiment, the phrase that the target power value is unrelatedto the first power value includes the meanings that the first powervalue is not used to determine the target power value.

In one embodiment, the phrase that the target power value is unrelatedto the first power value includes the meanings that the target powervalue is first allocated to the first node.

In one embodiment, the phrase that the target power value is unrelatedto the first power value includes the meanings that the first powervalue is allocated to the first node after the allocation of the targetpower value is completed.

In one embodiment, the phrase that the target power value is unrelatedto the first power value includes the meanings that the target powervalue is used to determine the first power value.

In one embodiment, a physical layer channel occupied by the target radiosignal includes a Physical Uplink Control Channel (PUCCH).

In one embodiment, a physical layer channel occupied by the target radiosignal includes a Physical Uplink Shared Channel (PUSCH).

In one embodiment, the target radio signal comprises Uplink ControlInformation (UCI).

Embodiment 9

Embodiment 9 illustrates a schematic diagram of a first time window anda second time window, as shown in FIG. 9. In FIG. 9, the first timewindow and the second time window are overlapped in time domain.

In one embodiment, the first time window is a slot, or the first timewindow is a mini-slot, or the first time window is a subframe.

In one embodiment, the second time window is a slot, or the second timewindow is a mini-slot, or the second time window is a subframe.

In one embodiment, the first signaling is used to determine a positionof the first time window in time domain.

In one embodiment, the second signaling is used to determine a positionof the second time window in time domain.

In one embodiment, the first time window and the second time windowrespectively belong to two different time resources pools.

Embodiment 10

Embodiment 10 illustrates another schematic diagram of a first timewindow and a second time window, as shown in FIG. 10. In FIG. 10, thefirst time window and the second time window are non-overlapped in timedomain.

In one embodiment, the first time window is a slot, or the first timewindow is a mini-slot, or the first time window is a subframe.

In one embodiment, the second time window is a slot, or the second timewindow is a mini-slot, or the second time window is a subframe.

In one embodiment, the first signaling is used to determine a positionof the first time window in time domain.

In one embodiment, the second signaling is used to determine a positionof the second time window in time domain.

In one embodiment, the first time window and the second time windowrespectively belong to two different time resources pools.

Embodiment 11

Embodiment 11 illustrates a schematic diagram of a target time windowand a first time window, as shown in FIG. 11. In FIG. 11, the targettime window is overlapped with the first time window in time domain.

In one embodiment, the target time window is a slot, or the target timewindow is a mini-slot, or the target time window is a subframe.

In one embodiment, a scheduling signaling of the target radio signal isused to determine a position of the target time window in time domain.

In one embodiment, the first time window and the target time windowrespectively belong to two different time resource pools.

Embodiment 12

Embodiment 12 illustrates a schematic diagram of a first node, a secondnode, a third node and a fourth node, as shown in FIG. 12. The firstnode, the second node and the third node illustrated are terminals, andthe fourth node is a base station. The first radio signal, a firstsignaling, a third radio signal and first control information of thepresent disclosure are transmitted between the first node and the secondnode in FIG. 12. The second radio signal, a second signaling, a fourthradio signal and second control information of the present disclosureare transmitted between the first node and the third node in FIG. 12.The target radio signal of the present disclosure is transmitted betweenthe first node and the fourth node.

In one embodiment, the first signaling schedules the first radio signal,the first control information is used to determine whether the firstradio signal is correctly received.

In one embodiment, the third radio signal is a CSI-RS in sidelink.

In one embodiment, the second signaling schedules the second radiosignal, the second control information is used to determine whether thesecond radio signal is correctly received.

In one embodiment, the fourth radio signal is a CSI-RS in sidelink.

In one embodiment, a physical layer channel occupied by the target radiosignal includes a PUCCH.

In one embodiment, a physical layer channel occupied by the target radiosignal includes a PUSCH.

In one embodiment, a transport channel occupied by the target radiosignal is an Uplink Shared Channel (UL-SCH).

In one embodiment, between the first node and the second node isunicast-based sidelink transmission.

In one embodiment, between the first node and the second node isgroupcast-based sidelink transmission.

In one embodiment, the priority of power allocation of a radio signaltransmitted between the first node and the fourth node is higher thanthat of a radio signal transmitted between the first node and the secondnode.

In one embodiment, the priority of power allocation of a radio signaltransmitted between the first node and the fourth node is higher thanthat of a radio signal transmitted between the first node and the thirdnode.

In one embodiment, the priority of power allocation of a radio signaltransmitted between the first node and the second node is higher thanthat of a radio signal transmitted between the first node and the thirdnode.

Embodiment 13

Embodiment 13 illustrates a flowchart of power allocation, as shown inFIG. 13. The first node operates as follows:

determining a target power value and whether a target time windowoverlaps with a first time window in step S1301;

if yes, determining that a first power value is equal to a differencebetween a target remaining power value and the target power value instep S1302;

if no, determining that a first power value is equal to first expectedpower value in step S1303;

determining whether a first time window is overlapped with a second timewindow in step S1304;

if yes, determining in step S1305 that a second power value is equal toa difference between a first remaining power value and a first powervalue;

if no, determining in step S1306 that a second power value is equal to asecond expected power value.

In one embodiment, the target remaining power value is a transmittingpower value acquired from a maximum transmitting power value minus atotal transmitting power value of all radio signals other than thetarget radio signal; and the priority of power allocation of each radiosignal of all radio signals other than the target radio signal isgreater than the target radio signal.

In one embodiment, the target remaining power value is a largest powervalue that can be allocated to the first node on a first carrier, thetarget radio signal is transmitted on the first carrier.

In one subembodiment, the first carrier is a Component Carrier (CC).

In one subembodiment, the first carrier is a Bandwidth Part (BWP).

In one embodiment, a pathloss between the first node and the fourth nodeis used to determine the target power value.

In one embodiment, the target power value is unrelated to a pathlossbetween the first node and the second node.

In one embodiment, the target power value is unrelated to a pathlossbetween the first node and the third node.

In one embodiment, a pathloss between the first node and the second nodeis used to determine the first expected power value.

In one embodiment, a pathloss between the first node and the fourth nodeis used to determine the first expected power value.

In one embodiment, a pathloss between the first node and the third nodeis used to determine the second expected power value.

In one embodiment, a pathloss between the first node and the fourth nodeis used to determine the second expected power value.

In one embodiment, the first remaining power value is a transmittingpower value acquired from a maximum transmitting power value minus atotal transmitting power value of all radio signals other than the firstcontrol information and the second control information; and the priorityof power allocation of any radio signal of all radio signals other thanthe first control information and the second control information ishigher than the first control information and the second controlinformation.

In one embodiment, the first remaining power value is a largest powervalue that can be used for sidelink transmission, which is left overafter the first node's full allocation of transmitting power of an Uulink.

In one embodiment, a sum of the target power value and the firstexpected power value is greater than the target remaining power value.

In one embodiment, a sum of the first expected power value and thesecond expected power value is greater than the first remaining powervalue.

Embodiment 14

Embodiment 14 illustrates a structure block diagram of a first node, asshown in FIG. 14. In FIG. 14, a first node 1400 is comprised of a firstreceiver 1401, a first processor 1402 and a first transmitter 1403.

The first receiver 1401 receives a first radio signal and a second radiosignal;

The first processor 1402 determines a transmitting power of firstcontrol information in a first time window as a first power value and atransmitting power of second control information in a second time windowas a second power value;

The first processor 1403 transmits first control information with thefirst power value in the first time window.

In Embodiment 14, the first control information is associated with thefirst radio signal, and the second control information is associatedwith the second radio signal; the first radio signal is unicast, whilethe second radio signal is groupcast; the first power value is unrelatedto the second power value, the second power value is relevant to whetherthe first time window overlaps with the second time window; a physicallayer channel format occupied by the first control information is thesame as a physical layer channel format occupied by the second controlinformation.

In one embodiment, the first transmitter 1403 transmits the secondcontrol information with the second power value in the second timewindow; when the first time window overlaps with the second time window,a difference between a first remaining power value and the first powervalue is used to determine the second power value; when the first timewindow does not overlap with the second time window, the second powervalue is unrelated to the first power value.

In one embodiment, when the first time window overlaps with the secondtime window, the first transmitter 1403 drops transmitting secondcontrol information in the second time window, the second power value is0; when the first time window does not overlap with the second timewindow, the first transmitter 1403 transmits second control informationwith the second power value in the second time window, the second powervalue is unrelated to the first power value.

In one embodiment, the first transmitter 1403 transmits a target radiosignal with a target power value in a target time window; the firstradio signal and the second radio signal are transmitted in sidelink,while the target radio signal is transmitted on uplink; the first powervalue is relevant to whether the first time window overlaps with thetarget time window, the target power value is unrelated to the firstpower value.

In one embodiment, the first receiver 1401 receives a third radiosignal, the third radio signal is used to determine a first expectedpower value, the first power value is equal to the first expected powervalue.

In one embodiment, the first receiver 1401 receives a fourth radiosignal, the fourth radio signal is used to determine a second expectedpower value, the second power value is equal to the second expectedpower value.

In one embodiment, the first receiver 1401 receives a first signaling,the first signaling comprises configuration information of the firstradio signal, the configuration information comprises at least one oftime domain resources occupied, frequency domain resources occupied, anMCS or an RV.

In one embodiment, the first receiver 1401 receives a second signaling,the second signaling comprises configuration information of the secondradio signal, the configuration information comprises at least one oftime domain resources occupied, frequency domain resources occupied, anMCS or an RV.

In one embodiment, the first receiver 1401 comprises at least the firstfour of the antenna 452, the receiver 454, the multi-antenna receivingprocessor 458, the receiving processor 456 and the controller/processor459 in Embodiment 4.

In one embodiment, the first processor 1402 comprises at least one ofthe multi-antenna transmitting processor 457, the transmitting processor468 or the controller/processor 459 in Embodiment 4.

In one embodiment, the first transmitter 1403 comprises at least thefirst four of the antenna 452, the transmitter 454, the multi-antennatransmitting processor 457, the transmitting processor 468 and thecontroller/processor 459 in Embodiment 4.

Embodiment 15

Embodiment 15 illustrates a structure block diagram of a second node, asshown in FIG. 15. In FIG. 15, a second node 1500 comprises a secondtransmitter 1501 and a second receiver 1502.

The second transmitter 1501 transmits a first radio signal;

The second receiver 1502 receives first control information in a firsttime window.

In Embodiment 15, the first control information is associated with thefirst radio signal, the first radio signal is unicast; a transmittingpower of the first control information in the first time window is afirst power value; a transmitter of the first control informationdetermines a transmitting power of second control information in asecond time window as a second power value, the second controlinformation is associated with the second radio signal, and the secondradio signal is groupcast; the first power value is unrelated to thesecond power value, the second power value is relevant to whether thefirst time window overlaps with the second time window; a physical layerchannel format occupied by the first control information is the same asa physical layer channel format occupied by the second controlinformation.

In one embodiment, the second transmitter 1501 transmits a third radiosignal, the third radio signal is used to determine a first expectedpower value, the first power value is equal to the first expected powervalue.

In one embodiment, the second transmitter 1501 transmits a firstsignaling, the first signaling comprises configuration information ofthe first radio signal, the configuration information comprises at leastone of time domain resources occupied, frequency domain resourcesoccupied, an MCS or an RV.

In one embodiment, the second transmitter 1501 comprises at least thefirst four of the antenna 420, the transmitter 418, the multi-antennatransmitting processor 471, the transmitting processor 416 and thecontroller/processor 475 in Embodiment 4.

In one embodiment, the second receiver 1502 comprises at least the firstfour of the antenna 420, the receiver 418, the multi-antenna receivingprocessor 472, the receiving processor 470 and the controller/processor475 in Embodiment 4.

Embodiment 16

Embodiment 16 illustrates a structure block diagram of a third node, asshown in FIG. 16. In FIG. 16, a third node 1600 comprises a thirdtransmitter 1601 and a third receiver 1602.

The third transmitter 1601 transmits a second radio signal;

The third receiver 1602 receives second control information in a secondtime window.

In Embodiment 16, the second control information is associated with thesecond radio signal, the second radio signal is groupcast; atransmitting power of the second control information in the second timewindow is a second power value; a transmitter of the second controlinformation determines a transmitting power of first control informationin a first time window as a first power value, the first controlinformation is associated with the first radio signal, and the firstradio signal is unicast; the first power value is unrelated to thesecond power value, the second power value is relevant to whether thefirst time window overlaps with the second time window; a physical layerchannel format occupied by the first control information is the same asa physical layer channel format occupied by the second controlinformation.

In one embodiment, the third transmitter 1601 transmits a fourth radiosignal, the fourth radio signal is used to determine a second expectedpower value, the second power value is less than the second expectedpower value.

In one embodiment, the third transmitter 1601 transmits a secondsignaling, the second signaling comprises configuration information ofthe second radio signal, the configuration information comprises atleast one of time domain resources occupied, frequency domain resourcesoccupied, an MCS or an RV.

In one embodiment, the third transmitter 1601 comprises at least thefirst four of the antenna 420, the transmitter 418, the multi-antennatransmitting processor 471, the transmitting processor 416 and thecontroller/processor 475 in Embodiment 4.

In one embodiment, the third receiver 162 comprises at least the firstfour of the antenna 420, the receiver 418, the multi-antenna receivingprocessor 472, the receiving processor 470 and the controller/processor475 in Embodiment 4.

Embodiment 17

Embodiment 17 illustrates a structure block diagram of a fourth node, asshown in FIG. 17. In FIG. 17, a fourth node 1700 comprises a fourthreceiver 1701.

The fourth receiver 1701 receives a target radio signal in a target timewindow.

In Embodiment 17, a first radio signal and a second radio signal aretransmitted in sidelink, while the target radio signal is transmitted onuplink; first control information is associated with the first radiosignal, and second control information is associated with the secondradio signal; the first radio signal is unicast, while the second radiosignal is groupcast; both a transmitter of the first radio signal and atransmitter of the second radio signal are non-co-located with thefourth node; a transmitting power of the first control information in afirst time window is a first power value, and a transmitting power ofthe second control information in a second time window is a second powervalue; the first power value is unrelated to the second power value, thesecond power value is relevant to whether the first time window overlapswith the second time window; a physical layer channel format occupied bythe first control information is the same as a physical layer channelformat occupied by the second control information; the first power valueis relevant to whether the first time window overlaps with the targettime window, the target power value is unrelated to the first powervalue.

In one embodiment, the fourth receiver 1701 comprises at least the firstfour of the antenna 420, the receiver 418, the multi-antenna receivingprocessor 472, the receiving processor 470 and the controller/processor475 in Embodiment 4.

The ordinary skill in the art may understand that all or part of stepsin the above method may be implemented by instructing related hardwarethrough a program. The program may be stored in a computer readablestorage medium, for example Read-Only-Memory (ROM), hard disk or compactdisc, etc. Optionally, all or part of steps in the above embodimentsalso may be implemented by one or more integrated circuits.Correspondingly, each module unit in the above embodiment may berealized in the form of hardware, or in the form of software functionmodules. The present disclosure is not limited to any combination ofhardware and software in specific forms. The first node and second nodein the present disclosure include but are not limited to mobile phones,tablet computers, notebooks, network cards, low-consumption equipment,enhanced MTC (eMTC) equipment, NB-IOT terminals, vehicle-mountedequipment, vehicles, automobiles, RSU, aircrafts, airplanes, unmannedaerial vehicles, telecontrolled aircrafts, etc. The base station in thepresent disclosure includes but is not limited to macro-cellular basestations, micro-cellular base stations, home base stations, relay basestation, eNB, gNB, Transmitter Receiver Point (TRP), GNSS, relaysatellites, airborne base station, RSU and other radio communicationequipment.

The above are merely the preferred embodiments of the present disclosureand are not intended to limit the scope of protection of the presentdisclosure. Any modification, equivalent substitute and improvement madewithin the spirit and principle of the present disclosure are intendedto be included within the scope of protection of the present disclosure.

What is claimed is:
 1. A first node used for wireless communications,comprising: a first receiver, receiving a first radio signal and asecond radio signal; a first processor, determining a transmitting powerof first control information in a first time window as a first powervalue and a transmitting power of second control information in a secondtime window as a second power value; and a first transmitter,transmitting first control information with the first power value in thefirst time window; wherein the first control information is associatedwith the first radio signal, and the second control information isassociated with the second radio signal; the first radio signal isunicast, while the second radio signal is groupcast; the first powervalue is unrelated to the second power value, the second power value isrelevant to whether the first time window overlaps with the second timewindow; a physical layer channel format occupied by the first controlinformation is the same as a physical layer channel format occupied bythe second control information.
 2. The first node according to claim 1,wherein the first transmitter transmits the second control informationwith the second power value in the second time window; when the firsttime window overlaps with the second time window, a difference between afirst remaining power value and the first power value is used todetermine the second power value; when the first time window does notoverlap with the second time window, the second power value is unrelatedto the first power value.
 3. The first node according to claim 1,wherein when the first time window overlaps with the second time window,the first transmitter drops transmitting second control information inthe second time window, the second power value is 0; when the first timewindow does not overlap with the second time window, the firsttransmitter transmits second control information with the second powervalue in the second time window, the second power value is unrelated tothe first power value.
 4. The first node according to claim 1, whereinthe first transmitter transmits a target radio signal with a targetpower value in a target time window; the first radio signal and thesecond radio signal are transmitted in sidelink, while the target radiosignal is transmitted in uplink; the first power value is relevant towhether the first time window overlaps with the target time window, thetarget power value is unrelated to the first power value.
 5. The firstnode according to claim 1, wherein a physical layer channel formatoccupied by the first control information and a physical layer channelformat occupied by the second control information are both PhysicalSidelink Feedback Channels (PSFCHs).
 6. The first node according toclaim 1, wherein the first control information is used to determinewhether the first radio signal is correctly decoded, the second controlinformation is used to determine whether the second radio signal iscorrectly decoded.
 7. A second node used for wireless communications,comprising: a second transmitter, transmitting a first radio signal; anda second receiver, receiving first control information in a first timewindow; wherein the first control information is associated with thefirst radio signal, the first radio signal is unicast; a transmittingpower of the first control information in the first time window is afirst power value; a transmitter of the first control informationdetermines a transmitting power of second control information in asecond time window as a second power value, the second controlinformation is associated with a second radio signal, the second radiosignal is groupcast; the first power value is unrelated to the secondpower value, the second power value is relevant to whether the firsttime window overlaps with the second time window; a physical layerchannel format occupied by the first control information is the same asa physical layer channel format occupied by the second controlinformation.
 8. The second node according to claim 7, wherein when thefirst time window overlaps with the second time window, a transmitter ofthe first control information drops transmitting second controlinformation in the second time window, the second power value is 0; whenthe first time window does not overlap with the second time window, atransmitter of the first control information transmits second controlinformation with the second power value in the second time window, thesecond power value is unrelated to the first power value.
 9. The secondnode according to claim 7, wherein a physical layer channel formatoccupied by the first control information and a physical layer channelformat occupied by the second control information are both PSFCHs. 10.The second node according to claim 7, wherein the first controlinformation is used to determine whether the first radio signal iscorrectly decoded, the second control information is used to determinewhether the second radio signal is correctly decoded.
 11. A method in afirst node used for wireless communications, comprising: receiving afirst radio signal and a second radio signal; determining a transmittingpower of first control information in a first time window as a firstpower value and a transmitting power of second control information in asecond time window as a second power value; and transmitting firstcontrol information with the first power value in the first time window;wherein the first control information is associated with the first radiosignal, and the second control information is associated with the secondradio signal; the first radio signal is unicast, while the second radiosignal is groupcast; the first power value is unrelated to the secondpower value, the second power value is relevant to whether the firsttime window overlaps with the second time window; a physical layerchannel format occupied by the first control information is the same asa physical layer channel format occupied by the second controlinformation.
 12. The method in the first node according to claim 11,comprising: transmitting the second control information with the secondpower value in the second time window; wherein when the first timewindow overlaps with the second time window, a difference between afirst remaining power value and the first power value is used todetermine the second power value; when the first time window does notoverlap with the second time window, the second power value is unrelatedto the first power value.
 13. The method in the first node according toclaim 11, comprising: dropping a transmission of second controlinformation in the second time window when the first time windowoverlaps with the second time window, the second power value being 0; ortransmitting second control information with the second power value inthe second time window when the first time window does not overlap withthe second time window, the second power value being unrelated to thefirst power value.
 14. The method in the first node according to claim11, comprising: transmitting a target radio signal with a target powervalue in a target time window; wherein the first radio signal and thesecond radio signal are transmitted in sidelink, while the target radiosignal is transmitted in uplink; the first power value is relevant towhether the first time window overlaps with the target time window, thetarget power value is unrelated to the first power value.
 15. The methodin the first node according to claim 11, wherein a physical layerchannel format occupied by the first control information and a physicallayer channel format occupied by the second control information are bothPSFCHs.
 16. The method in the first node according to claim 11, whereinthe first control information is used to determine whether the firstradio signal is correctly decoded, the second control information isused to determine whether the second radio signal is correctly decoded.17. A method in a second node used for wireless communications,comprising: transmitting a first radio signal; and receiving firstcontrol information in a first time window; wherein the first controlinformation is associated with the first radio signal, the first radiosignal is unicast; a transmitting power of the first control informationin the first time window is a first power value; a transmitter of thefirst control information determines a transmitting power of secondcontrol information in a second time window as a second power value, thesecond control information is associated with the second radio signal,and the second radio signal is groupcast; the first power value isunrelated to the second power value, the second power value is relevantto whether the first time window overlaps with the second time window; aphysical layer channel format occupied by the first control informationis the same as a physical layer channel format occupied by the secondcontrol information.
 18. The method in the second node according toclaim 17, wherein when the first time window overlaps with the secondtime window, a transmitter of the first control information dropstransmitting second control information in the second time window, thesecond power value is 0; when the first time window does not overlapwith the second time window, a transmitter of the first controlinformation transmits second control information with the second powervalue in the second time window, the second power value is unrelated tothe first power value.
 19. The method in the second node according toclaim 17, wherein a physical layer channel format occupied by the firstcontrol information and a physical layer channel format occupied by thesecond control information are both PSFCHs.
 20. The method in the secondnode according to claim 17, wherein the first control information isused to determine whether the first radio signal is correctly decoded,the second control information is used to determine whether the secondradio signal is correctly decoded.